First I want to apologize in advance if the proposed function is already in place, it is just me that couldn't find it .
This suggestion will have two parts:
To restore the 'what matters' button that used to be on the up-left corner. This is one of the most used features for me from the old site, I used it to check the posts sorted by posting time across ALL subforums. This feature turned out to be very helpful for the following reason :
Often new SAS users are not very familiar with the terminology that defines the subforum, so it is difficult for them to choose the right subforum to post their questions.
Often a question could cover multiple subforums, for example, a question about Stored Process could be discussed in both BASE SAS programming and Business Intelligence.
With this function in place, it helps contributors to identify the questions across the subforums with ease, it also benefit the learning process for SAS users of all levels.
2. That said, the view may get clogged up pretty quick as the forum grows. So the second part of my suggestion, as showing in the title: User profile customizing only to see certain subforums, and ideally, only for this functionality.